Property and Equipment - Components of Property and Equipment (Details) - USD ($) $ in Thousands	1 Months Ended	11 Months Ended	12 Months Ended
Dec. 31, 2018	Nov. 19, 2018	Dec. 31, 2019	Dec. 31, 2017	Nov. 20, 2018
Property, Plant and Equipment [Line Items]
Property and equipment, cost	$ 1,927,455	$ 5,949,624	$ 1,962,470		$ 1,920,474
Accumulated depreciation	(12,283)	(1,526,915)	(119,921)
Property and equipment, net	1,915,172	4,422,709	1,842,549		1,920,474
Depreciation	12,300	247,700	108,100	$ 278,200
Drillships and Related Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, cost	1,926,773	5,928,887	1,962,211		1,919,791
Other property and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, cost	$ 682	$ 20,737	$ 259		$ 683

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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